Creating new Date Formats:

1. Click on Configuration >> Date and Time

2. Click on the Formats Tabs

3. Here we can create new Date formats, check out the PHP manual for exact symbols for formating the date
formatstring.png
4. In this example "W" represents the week number of the year, notice the preview on the side.

5. Click on Add format and it will be available in the drop down lists.




Changing your Date View:
1. Click on Configuration >> Date and Time

2. Here you can customize the format of date types. Click on add date type and enter a name for it

(Alternatively you can select from the drop downs to change the default date types under Long,Medium,Short)

3. Select from the list for which date format is best suited for your needs

4. Navigate to Structure >> Views >> and click on "edit" for the Employment History View.

5. Click on Content: Date under Fields.

6. Change the "Choose how users view your Date and Time" to the name of your customized date type.